Tutorial Linux part 4: Daemon Process

              Daemon process adalah sebuah process yang berjalan di background dan tidak berinteraksi langsung dengan user. Daemon process sendiri dibuat untuk operasi – operasi tertentu atau untuk menangani hal – hal administratif, seperti email, antivirus, firewall, dan lain- lain. Dalam windows, daemon sering disebut System Agents atau Services. Cara membuat daemon memiliki beberapa langkah penting yaitu sebagai berikut.

1.       Forking Parent Process

Untuk membuat sebuah daemon process, awalnya kita harus membuat child process, yang kemudian parent processnya akan dimatikan. Parent process ini akan dimatika atau exit ketika child process berhasil dibuat.

2.       Mengubah Mode File(UMASK)

Untuk menulis atau mengakses file apapun yang dibuat oleh daemon, kita harus mengubah mode file terlebih dahulu dengan fungsi umask. Dengan mengubah umask menjadi 0 maka kita akan memiliki akses penuh pada file yang dibuat oleh daemon.

3.       Membuat Unique Session ID(SID)

Mulai dari sini kita harus membuat Unique Session ID untuk child process yang telah kita buat, jika tidak process tadi akan menjadi orphan process. Sekali lagi, kita lakukan error-checking disini seperti dalam fungsi fork diatas.

4.       Mengubah Direktori yang Bekerja

Direktori yang bekerja harus kita ubah dimana process tersebut akan terus berjalan. Dengan kata lain adalah dalam folder root “/”. Kita gunakan fungsi chdir  disini.

5.       Menutup Standard File Descriptor

Hal terakhir yang paling penting disini adalah menutup File Descriptor untuk memastikan Daemon Process tidak berhubungan dengan User.

6.       Daemon Big Loop

Disinilah kita tulis inti process daemon yang telah kita buat. Atau process utama yang ingin kita lakukan dengan daemon yang kita buat. Kita masukkan process kita dalam while(1).

Demikian sekian tutorial pembuatan Daemon, semoga apa yang saya tulis disini dapat memberi banyak manfaat bagi teman – teman sekalian. Terima kasih.

Tutorial Linux Part 3: Process

                Selamat berjumpa kembali kawan – kawan sekalian, pada kesempatan kali ini saya akan menjelaskan dua hal yang tidak kalah penting dari materi sebelumnya, yaitu process. Process adalah sebuah program atau aplikasi yang sedang dieksekusi di alamat virtual. Process sendiri ada bermacam – macam jenis yaitu :

Tutorial Linux Part 2: Bash Scripting[1], Mencetak dan Membaca input

                Selamat malam teman – teman, jumpa lagi dalam Tutorial Linux yang kedua. Tutorial Linux kali ini akan mengupas hal lebih lanjut yang dapat dilakukan oleh Terminal Linux, yang tidak lain adalah BASH(Bourne-Again-Shell) scripting. Bash script adalah salah satu varian shell yang paling sering digunakan pada Linux. Bash sering digunakan karena fiturnya yang banyak dan portabilitasnya yang tinggi. Nah, untuk awal dari tutorial Bash ini saya akan mengenalkan fitur dasarnya terlebih dahulu. Yaitu membaca input dan mencetak pada terminal. Tapi sebelum itu yang perlu diketahui file bash script disimpan dengan ekstensi “.sh”  , kemudian jika kita ingin menjalankannya kita harus mengubah permissionnya terlebih dahulu yaitu dengan cara “chmod +x [namafile.sh] . Kemudian kita dapat menjalankannya. Berikut cara – caranya :

Tutorial Linux Part 1: Command – Command dasar pada Terminal Linux

Selamat datang dalam tutorial pertama Linux ini. Dalam Linux segala hal terlihat berbeda. Meski terkadang terlihat tidak beda jauh dengan Windows, namun memang semuanya berbeda. Mulai dari lisensi, system file, cara pengembangannya pun berbeda. Terkadang memang untuk sebagian orang awalnya sulit mengoperasikan linux beserta isinya. Oleh karena itu, kali ini saya akan membahas salah satu bagian penting dari linux yaitu “Terminal”. Terminal sepintas terlihat seperti cmd atau command prompt pada Windows. Namun dalam linux, Terminal memiliki peran besar dalam pengoperasiannya.

Berikut beberapa command pada linux beserta fungsinya :

1.       nano

nano adalah command untuk membuat suatu file, entah itu text, script, dan lain – lain. Saat kalian menggunakan command nano, file yang kalian buat akan langsung disimpan di dalam folder root/home.

Format penggunaan perintah nano yang sederhana adalah “nano [namafile.extensifile]. File diatas bernama "baru.txt"

Setelah perintah nano dieksekusi, akan muncul text editor seperti ini

Lalu untuk menyimpannya, tekan Ctrl + X dan Enter.

Untuk membukanya kembali kalian tinggal masukkan nano lagi dengan nama file kalian tadi.

2.       chmod

chmod adalah command untuk mengubah permission dari sebuah file. Perintah ini memiliki beberapa atribut permission sebagai berikut :

Cara penggunaanya pun bermacam - macam, salah satunya jika ingin mengubah permission dari tiga grup, ex :

chmod 777

fungsi diatas berarti kalian mengubah permission dari [User], [Group], dan [World]. Tiga angka 7 mewakili tiga permission tersebut.

3.       Mkdir

mkdir berfungsi untuk membuat folder baru pada direktori saat ini.

Dalam perintah diatas, artinya kita akan membuat folder dengan nama "baru". Format penggunaanya adalah mkdir [namafolder]

4.       Ls

ls berfungsi untuk melihat isi dari direktori saat ini. Contohnya ketika kita memasukkan ls akan muncul tampilan seperti ini

Tulisan - tulisan di bawah perintah tersebut adalah semua file dan folder yang ada pada direktori home(Tidak termasuk subfolder).

5.       Pwd

 pwd berfungsi untuk mencetak alamat dimana user terminal kita sekarang berada. Contohnya sebagai berikut:

Itu artinya kita sedang berada dalam folder /home/reborn/Documents

6.       sudo

sudo berfungsi untuk mengeksekusi suatu perintah dengan Administrator permission. Karena terkadang ada beberapa file ataupun perintah yang hanya dapat dieksekusi sebagai superuser .Kita tinggal menggunakan sudo di depan perintah yang akan kita lakukan. Contoh:

sudo nano /etc/apt/apt.conf

Artinya kita mengedit file apt.conf sebagai Administrator atau superuser

Sekian dulu Tutorial pertama untuk command - command dasar linux. Salah satu yang harus anda perhatikan, semua command dan input dalam terminal adalah case sensitive. Terima kasih

De Blob

100 MB

de Blob, known as Blob: Colorful na Kibou in Japan, is a 2008 platform-puzzle video game that allows players to explore and liberate an alien city from the evil, monochromatic INKT Corporation that has taken over the city and outlawed all color and fun from daily life. Playing as de Blob, gamers will embark on a quest to re-animate the fictional place of Chroma City (a parody of Manhattan), and bring character back to the oppressed, by splattering buildings, landmarks, and citizens with color.

The player—Blob—starts out as a ball of clear "water". De Blob is free to roll around and collect paint from Paintbots in the three colors of red, yellow and blue, which can be combined into orange, green, purple, and brown. de Blob then merely has to touch a building, lamppost, billboard, or other object for the entire surface of said object to be smeared in his current color. As he colors the city, the game's soundtrack, featuring live bands which recorded slow and fast versions of each "lick" (each hit), gradually adds more instrumentation as well as an additional "layer" of sound corresponding to de Blob's current colour—being red usually adds a saxophone solo to the music, for example. As de Blob collects paint, his size increases to a maximum of 100; each object he paints costs a paint point, as does attacking enemies. de Blob can get rid of his colour with water.

MODEM BOOSTER 7

2 MB

Modem Booster 7 Full Crack is a software that is able to increase the speed of a modem connection supports speeds almost 300% from the previous you use that almost supports all popular brands of modems and of course that is widely used today. For those of you who feel your internet connection is very slow, maybe this software can be used as solutions to improve the speed of your Internet connection very easily.

Features :

•     New and fully enhanced Automatic Speed Tune Up

•     Check and fix speed problems
•     Optimizes all slow dial-up and high-speed connections
•     Works around the clock to monitor your speed connection and alert you to tune up
•     Give your internet speed a faster
•     Restores internet stability anytime without long hiatus
•     Maximize your current internet bandwidth
•     As good as having a Speed expert living inside your PC
•     Fully maximise your current upload and download speed
•     Easy to use and much more

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EXTREME COPY PRO 1.5

7.26 MB

ExtremeCopy is a great application whcibh allows users to manage their files fast and easy.

The software can copy and move files extreme fast, it will auto optimize speed and resource base on structure of physical machine, especially copy big files, it can reach to 8 times of Windows copying function.


NOTE: Free for Home Users

ANGRY BIRDS SPACE

51.33 MB

Angry Birds Space features 60 interstellar levels on planets and in zero gravity, resulting in spectacular gameplay ranging from slow-motion puzzles to lightspeed destruction. With regular free updates, new in-app purchases, brand new birds, brand new superpowers, and a whole galaxy to explore, the sky is no longer the limit!

After a giant claw kidnaps their eggs, the Angry Birds chase it into a wormhole and find themselves floating in a strange new galaxy – surrounded by space pigs!

ANGRY BIRDS RIO

33 MB

What happens when everybody's favourite fierce fowl get caged and shipped to Rio? They get very angry! In Angry Birds Rio, the original Angry Birds are kidnapped and taken to the magical city of Rio de Janeiro, where they eventually escape their captors and set out to to save their friends, Blu and Jewel – two rare macaws and the stars of the hit motion picture, Rio. Angry Birds Rio will pair the physics-based gameplay of the original game with unique twists based on the film.

BATTLEFIELD 2142[RIP]

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ASSASIN'S CREED : REVELATIONS[REPACK]

3.2 GB

Assassin's Creed Revelations presents the most immersive experience available in the series to date and the culmination of Ezio's adventure. In Assassin’s Creed Revelations, master assassin Ezio Auditore walks in the footsteps of his legendary mentor, Altaïr, on a journey of discovery and revelation. It is a perilous path – one that will take Ezio to Constantinople, the heart of the Ottoman Empire, where a growing army of Templars threatens to destabilize the region.

PORTAL[RIP]

583 MB

A unique take on puzzle gameplay by the makers of Half-Life. Portal is a new type of single player game that changes how players approach, manipulate, and surmise the possibilities in a given environment in a manner similar to how the Gravity Gun changed our approach to how an object may be leveraged in any given situation.

DEUS EX : GAME OF THE YEAR EDITION

384 MB

The game that incorporates role-playing, action, adventure and 1st person shooter genres into a chaotic blend of real world conspiracies, cliffhangers and plot twists. Explore a richly simulated world of unparalleled interactivity, engineered to react logically to your every action. The decisions and consequences are yours. Character interaction that matters. How you choose to deal with scores of NPC´s affects the outcome of the game, minute-to-minute, mission-to-mission, start to finish.

BATTLEFIELD BAD COMPANY 2[RELOADED]

5.4 GB

Battlefield: Bad Company 2 is a first-person shooter video game developed by the Swedish firm EA Digital Illusions CE and published by Electronic Arts for Microsoft Windows, PlayStation 3, Xbox 360 and iOS systems. It is a part of the Battlefield series and was released worldwide in March 2010.
The game is primarily a squad-level online first person shooter based in a contemporary modern warfare setting. Additionally, the game includes a single player campaign, where the player re-assumes the role of Preston Marlowe, the protagonist of the original game. The game's Frostbite 1.5 engine allows for destructible environments, and multiplayer maps contain a wide selection of vehicles, aircraft and emplacements and allow for five different game modes.
The game was announced in February 2009 and free game demos were made available prior to the game's launch. It was met with a positive reception from game critics, garnering a weighted mean of 88% from aggregator Metacritic for all three ports. It has also become a commercial success, having sold in excess of nine million units since its initial release. Seven VIP map packs as well as a downloadable game mode have been released thus far, and an expansion pack centered around the Vietnam War which was released on December 21, 2010. EA released an iOS port of the game on December 16, 2010.

NEED FOR SPEED MOST WANTED[RIP]

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NEED FOR SPEED SHIFT 2 : UNLEASHED [RELOADED]

6.7 GB

 Shift 2: Unleashed (also known as Need for Speed: Shift 2 Unleashed) is an upcoming racing video game, the 17th title in the Need for Speed franchise, under development by Slightly Mad Studios and published by Electronic Arts. Shift 2: Unleashed is scheduled for release on 29 March 2011 in US, on 31 March in Europe and on 1 April in the UK.

Shift 2: Unleashed is the direct sequel to the generally favorable review 2009 video game Need for Speed: Shift and expands on the gameplay and features introduced with the original. Shift 2: Unleashed will feature 145 cars from 37 manufacturers and 36 different tracks, which players can compete in several types of races. Players will also be able to compete online. The game will also feature three new main additions, an in-helmet cam, night-time racing and the Autolog feature introduced with Need for Speed: Hot Pursuit. EA has promise that it’ll "redefine the racing simulator genre" and has been called "the most realistic racer ever".

JAMES CAMERON'S AVATAR : THE GAME [RELOADED]

3.6 GB

James Cameron's Avatar: The Game is the official video game based on the highly anticipated film James Cameron's Avatar. The video game will take you deep into the heart of Pandora, an alien planet that is beyond imagination Gamers will encounter the Na'vi, Pandora's indigenous people and discover other life forms the likes of which have never been seen in the world of video games before. When conflict erupts between the RDA Corporation, a space-faring consortium in search of valuable resources, and the Na'vi gamers will find themselves thrust into a fight for the heart of a planet and the fate of a civilization.

SPECIAL FORCE: NEMESIS STRIKE [Rip]

 

188 MB

You belong to an elite force fighting against global counter-terrorism. Your team is made up of two crack agents poised to react to any threat. Stealth Owl is an infiltration expert, whose skills are accuracy and skydiving. Raptor uses weapons of mass destruction and favours close combat. Your main objective is to dismantle the NEMESIS network and retrieve the stolen technology. But by changing the chemical properties of certain proteins, the terrorists have made their fighters much more aggressive...

CODENAME OUTBREAK

177.3 MB

After a comet hit Planet Earth, mankind has a big problem: with the comet came alien parasites which turned humans into zombielike creatures. You are a member of a special forces team and you are ordered to do away with the alien scum. Another team member will help you on your way.

COMMAND AND CONQUER : RED ALERT 3 [Full-Rip]

 

1.9 GB

 

Return to the Red Alert continuity of the esteemed Command & Conquer RTS franchise in this full-fledged series sequel. Red Alert 3 breaks new ground in the RTS genre, featuring a fully co-operative campaign while bringing back the series' light-hearted style and classic, action-oriented gameplay.